1// Code created by gotmpl. DO NOT MODIFY.
2// source: internal/shared/otlp/otlpmetric/oconf/tls.go.tmpl
3
4// Copyright The OpenTelemetry Authors
5//
6// Licensed under the Apache License, Version 2.0 (the "License");
7// you may not use this file except in compliance with the License.
8// You may obtain a copy of the License at
9//
10// http://www.apache.org/licenses/LICENSE-2.0
11//
12// Unless required by applicable law or agreed to in writing, software
13// distributed under the License is distributed on an "AS IS" BASIS,
14// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15// See the License for the specific language governing permissions and
16// limitations under the License.
17
18package oconf
19
20import (
21 "crypto/tls"
22 "crypto/x509"
23 "errors"
24 "os"
25)
26
27// ReadTLSConfigFromFile reads a PEM certificate file and creates
28// a tls.Config that will use this certifate to verify a server certificate.
29func ReadTLSConfigFromFile(path string) (*tls.Config, error) {
30 b, err := os.ReadFile(path)
31 if err != nil {
32 return nil, err
33 }
34
35 return CreateTLSConfig(b)
36}
37
38// CreateTLSConfig creates a tls.Config from a raw certificate bytes
39// to verify a server certificate.
40func CreateTLSConfig(certBytes []byte) (*tls.Config, error) {
41 cp := x509.NewCertPool()
42 if ok := cp.AppendCertsFromPEM(certBytes); !ok {
43 return nil, errors.New("failed to append certificate to the cert pool")
44 }
45
46 return &tls.Config{
47 RootCAs: cp,
48 }, nil
49}
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